Hearing aid maintenance system



Fig. 1.1 is a front elevational view of a hearing aid maintenance system showing my new design;

Fig. 1.2 is a left side elevation view thereof;

Fig. 1.3 is a right side elevation view thereof;

Fig. 1.4 is a top plan view thereof;

Fig. 1.5 is a bottom plan view thereof, showing surface features in broken lines;

Fig. 1.6 is an upper perspective view thereof in a closed configuration; and

Fig. 1.7 is another upper perspective view thereof in an opened configuration.

The broken lines in Figure 1.5 are included for the purpose of illustrating surface features as environment and forms no part of the claimed design. 

CLAIM The ornamental design for a hearing aid maintenance system, as shown and described. 